Text size calculator

Get the size of a text in bytes (B), Kilobytes (KB) or Megabytes (MB).

Calculates: File Size
Units: B, KB, MB, GB, TB
Speed: Real-time

Text size calculator

Enter Your Text
Size is calculated in real-time as you type
Key Features
  • Real-time calculation
  • Automatic unit conversion
  • Accurate byte counting
  • No file upload needed
  • 100% free forever
Size Result

Size

Byte Count

0

Words

0

Characters

0

Lines

0

Spaces

0

How It Works

1
Paste Text

Copy and paste your text

2
Calculate

Size is computed instantly

3
Convert

Automatic unit conversion

4
View Results

See detailed statistics

File Size Units Explained

Unit Bytes Example Common Use
Byte (B) 1 Single character Very small files
Kilobyte (KB) 1,024 B Small text document Documents, emails
Megabyte (MB) 1,024 KB Music song, photos Images, audio files
Gigabyte (GB) 1,024 MB Movie, software Video, applications
Terabyte (TB) 1,024 GB Hard drive Large storage

Perfect For

File Estimation

Estimate file sizes before uploading to estimate bandwidth usage.

Email Attachments

Check attachment sizes before sending emails with limits.

Storage Planning

Calculate storage requirements for projects and backups.

Educational

Learn about file sizes and data storage units.

Why Choose Our Tool?

⚡
Instant Calculation

Real-time as you type

📊
Multiple Metrics

Words, chars, lines, more

🔄
Auto Conversion

B, KB, MB, GB, TB

📱
Mobile Friendly

Works anywhere

🔒
Local Processing

Data never uploaded

🆓
100% Free

No registration

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Complete Guide

Understanding Text Size

Text size refers to the amount of storage space text occupies when encoded in digital form. Each character is typically represented by one or more bytes, depending on the encoding used (ASCII, UTF-8, etc.). This calculator computes the exact file size of any text content instantly.

Why Calculate Text Size?

  • Email Limits: Many email providers restrict attachment sizes (usually 25-50 MB)
  • Database Design: Plan storage for large text fields
  • API Limits: Some APIs restrict payload sizes
  • Bandwidth: Estimate data transfer requirements
  • Compression: Determine compression benefits

Text Encoding Impact

  • ASCII: 1 byte per character (English only)
  • UTF-8: 1-4 bytes per character (supports all languages)
  • UTF-16: 2-4 bytes per character
  • Special Characters: Can use multiple bytes

File Size Calculation Formula

File Size = Number of Bytes × (Bytes per Character)

Most modern applications use UTF-8 encoding, where standard English text uses 1 byte per character, but special characters, emojis, and non-Latin characters can use 2-4 bytes each.

Practical Examples

  • "Hello World" = 11 bytes
  • This paragraph ≈ 500 bytes
  • Average book ≈ 500 KB
  • Large document ≈ 5-50 MB
Pro Tip: Use this tool to verify text sizes before uploading large documents or sending via email to avoid rejection errors.

FAQ

No! All calculations happen locally in your browser. Your text never leaves your device or gets uploaded to our servers.
Very accurate. We calculate the exact byte size using UTF-8 encoding, the same method used by modern browsers and systems.
Emojis and special characters use multiple bytes (often 2-4 bytes each), and our calculator accounts for this automatically.
Lines are counted by newline characters (\n). Words are separated by spaces. The calculation updates in real-time.
Yes! The tool handles large text without issues. Your browser might be slower with extremely large texts (hundreds of MB).
This tool uses UTF-8 encoding, the modern standard for text on the internet and most applications.
Yes! Compression (ZIP, GZIP) can reduce text files by 50-80% depending on content. This tool shows uncompressed size.
Yes! 100% free with unlimited calculations and no registration required.

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